Refer to your Expeditions in Reading book for a complete version of this text.
Mary Jackson believes in using her experience to help others succeed.
Which detail from “Mary Jackson Biography” best supports this idea?
Mary and her husband support young African Americans who want to pursue careers in science.
She fights to attend classes at a segregated school because she wants to become an engineer.
Mary retires with a number of honors for the work she did while employed by NASA.
She works with a team of engineers to write reports for NASA.
is my question.
can some one help me?
Answer: in order
1. DNA condenses to form chromosomes
4. each pair of chromosomes line up in the middle of the cell
3. pairs of chromosomes separate
2. A nuclear membrane forms around chromosomes
Stage 1- Prophase
Stage 2- Metaphase
Stage 3- Anaphase
Stage 4- telophase
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Answer:
1. DNA condenses to form chromosomes
4. each pair of chromosomes line up in the middle of the cell
3. pairs of chromosomes separate
2. A nuclear membrane forms around chromosomes
Explanation:
Prophase IDuring prophase I, the chromosomes condense and become visible inside the nucleus. Because each chromosome was duplicated during the S phase that occurred just before prophase I, each now consists of two sister chromatids joined at the centromere. This arrangement means that each chromosome has the shape of an X.
Once this chromosomal condensation has occurred, the members of each chromosome pair (called homologous chromosomes, because they are similar in size and contain similar genes), align next to each other. At this point, the two chromosomes in each pair become tightly associated with each other along their lengths in a process called synapsis. Then, while the homologous chromosomes are tightly paired, the members of each pair trade adjacent bits of DNA in a process called crossing over, also known as recombination (Figure 1). This trading of genetic material creates unique chromosomes that contain new combinations of alleles.
At the end of prophase I, the nuclear membrane finally begins to break down. Outside the nucleus, the spindle grows out from centrosomes on each side of the cell. As in mitosis, the microtubules of the spindle are responsible for moving and arranging the chromosomes during division.
Metaphase IA schematic shows two pairs of homologous chromosomes arranged in a vertical formation in the middle of a cell. Two developing mitotic spindles flank the four chromosomes. Long fibers radiating from the mitotic spindles are attached to the centromere of each chromosome.
At the start of metaphase I, microtubules emerge from the spindle and attach to the kinetochore near the centromere of each chromosome. In particular, microtubules from one side of the spindle attach to one of the chromosomes in each homologous pair, while microtubules from the other side of the spindle attach to the other member of each pair. With the aid of these microtubules, the chromosome pairs then line up along the equator of the cell, termed the metaphase plate
Anaphase IA schematic shows each member in a pair of homologous chromosomes separating from its partner and migrating in opposite directions. White spindle fibers attached to the centromeres of each chromosome are responsible for the movement of the chromosomes to opposite poles of the cell.
During anaphase I, the microtubules disassemble and contract; this, in turn, separates the homologous chromosomes such that the two chromosomes in each pair are pulled toward opposite ends of the cell (Figure 3). This separation means that each of the daughter cells that results from meiosis I will have half the number of chromosomes of the original parent cell after interphase. Also, the sister chromatids in each chromosome still remain connected. As a result, each chromosome maintains its X-shaped structure.
Telophase IA schematic shows two overlapping, circular cells, each with a nucleus and two chromosomes. The cytoplasmic portions of the cells are light grey, and the nuclei are dark grey. The chromosomes in the left-hand cell are mostly green, but the lower regions of the right chromatids are orange. The chromosomes in the right-hand cell are mostly orange, but the lower regions of the left chromatids are green. Both cells have remnants of the mitotic spindle in the cytoplasm.
As the new chromosomes reach the spindle during telophase I, the cytoplasm organizes itself and divides in two. There are now two cells, and each cell contains half the number of chromosomes as the parent cell. In addition, the two daughter cells are not genetically identical to each other because of the recombination that occurred during prophase I
Which phrases apply to metamorphic rock formation? Check all that apply.
form from existing rocks
form without melting
appear foliated or non-foliated
form from liquid rock
form from deposition
require heat and pressure to form
Answer:
the ⛰️ melts in heat and forms in
Can anyone help me please
Answer: in explanation
Explanation:
For the first one the answer is friction since it is reduced when wet
The second or third I don’t know
Several species of wasp kill other organisms to lay their eggs in but are not considered true parasites. Why do you think an organism like this isn't considered a true parasite?
Answer:
This is because parasites do not actually kill their hosts, which makes them not a true parasite even if they benefit while the host is harmed.
Explain Mendel’s laws in genetic terms, that is, in terms of chromosomes, genes, and alleles.
Mendel's First Lawstates that for the pair of alleles an individual has of some gene (or at some genetic locus), one is a copy of a randomly chosen one in the father of the individual, and the other if a copy of a randomly chosen one in the mother, and that a randomly
A parent may have two distinct alleles for a certain gene, each on one copy of a given chromosome. Mendel's second law, the law of segregation, states that these two alleles will be separated from each other during meiosis.
Hope this helps!
According to traditional materialism, _____ are component mechanisms having complex brains producing various brain states.
Answer: Robot
Explanation:
As the robot have a complex brain activity because it consist of more number of integrated chips that are connected together to form a brainy unit, so the answer be the ROBOT
For Reference :https://brainly.in/question/22209260
Isidro visits the same park every week. The park has lots of different rock formations. How does the rock at the park change from week to week?
Answer:
There is no way that sedimentary rock can form from material in igneous rock. Isidro visits the same park every week. The park has lots of different rock formations. The rock will not change at all.
Explanation:
Answer: It can change in many different ways, but my explanation is the most common.
Explanation: Erosion and Weather. Weather has a big impact of the world around us. Weather and Erosion work together. The world is constantly changing, including the rock formation. For example, if it rained all last week the formation would be different because there is a chance that some of the rock was chipped away (depending on the strength and build of the rock and how old it is). This is when Erosion takes place. Erosion is a cycle. Erosion helps for other rocks and different shapes of rocks.
Hope this helps!
describe ways you will decrease your ecological footprint
Answer:
Walk, bike, or take public transport whenever possible.
